Coupling for fiber pipes



Oct. 2, 1928. I 1,686,498

' H. PARKER COUPLING FOR FIBER PIPES Original Filed Oct. 16. 1922 2Sheets-Sheet 1 Jo attoznaq Oct. 2, 1928. 1,686,498

I H. PARKER COUPLING FOR FIBER PIPES Original Filed Oct. 16, 1922 2Sheets-Sheet 2 bowwra Patented a. 2, 1928.

Howie Rn PARKER; cries stilt, nevi} VHAIVIPSHIIBE; Assis nca To BROWNCont-Pliers,

or BEE-LIN,- NEW rmm-rsrtrlm, A CORPORAT-IGN- OF- MeIrm.-.

. r ooUrLIite FOR FIEERMVPIPESI.

Application filedio'ctob er is, 1922; Serie1'Noi594'f/9 7i ages-aseame-"301 192$] The obj ectf of the present invention is to. providea"n'ovela n'd advantageous coupling for joining a tube or pipe formed offibrous or 'pu'lpf stock to another pipe'or' other I1 l61lT 1- berformed of the; same" QIf'OfIllll Br'efit te'ri ali- More pa'rticu'larly,the aim of the inventionj isj to provide a coupling fo -fibe pipe whichis simple andeconomical'in constiuction; which maybe readily'applie'd,and to which is v'ery efiici'e'nt' inthat itform's a 'secure and'fieidtightjoint, and prevents the: permeationlof" moisture between the ;.pipeand the sleeve" forming a' part" of y the cou pling'i; Theparts'of niyimprovedcoupling may be'ass'emble'd on the pipej'atthe factory Whereproper careni'aybe taken by skilled persons, an'd'theiijshippfed to thefield Where ordinary WorkIneirn'Iay lay the same. Thus the ends of thepipes areprotectedduring" shipment and the" dutiesfof' the funskilledworkmen employed in laying thepipe are minimized, afeature of the utmostimportance in the artbf' pulp or 'fibertubes, Where injury isliab le to'result'to' the product 7 through'ignorance or lack of preoautio11,

In the accompanying 'drawings wherein I I have shown, forillustrativepurposes,- two embodiments which the present inventionmaytake, Fig; 1 is'aside'elevational View of r'ny'irnproved coupling; 1p Fig. 2 is a View in central-longitudinal section; Y s p Fig. 3 is a'vie'w showinganother embodi- Inent ofn y' invention :whereina"fiber-'pipe is coupled to'a flange member.

Referring to Figs. 1 and 2 "of the. draw ings indeail 'a, b, denote-thepipes tobeL connected together, these pipes preferably b'eingforrned offiberas'bywinding', under?- pressure, a Wet Web of pulp 'ont'oa inandretuntil the desired thickness oftube is formed, then thoroughlydrying thepipe or tube and then Waterproofing it, On'e'o'f thesefpipes 5" may beof fiber and the other'of metal, ref

instance. In accordance with the present invention, the adjacent ends ofthep'ip'e's are externallythreaded as at and 11, respec tively. Screwedonto these respective threaded ends jarethe sleeves' 12 an'd13,alsopreferably constructed of fiber-tem er; stock, Each of saidslee eSisa'n integral cylindrical member which" is e circumfer entiallycontinuous througlroufiits' length; that is to "say, each sleeve isdevoid of any slits, slots or? cracks; asiwillbe seenfio'rfi'thedi'aWings; One oftheso' slee'ves, in tll'e' pres entginistance sleeve12', extends beyond end of the 'pipe l'O 'w ith hicli'itisasated andthe-internal periphery of this mtruding portion is smooth as" at 14andof such-diameter that the threaded end' of the" so" I other pipe 11has a closebut sliding there in.- s The other sleeve 13 ternii'natesslrorti' of the end of the pipe 11 onlwhic'haitfis I screwed a distanceslightly greater th a-h the extent to which the sleeve '12 protrudes be-'yond the pipe 10=soa's' -to perir'iit' pre endsof the pipes tobeabuttedand' drawn tightly" together without bringing the 5 ends ofthe' sleeves into' engagement. ;If desired) gasket 15 may be interposedbetween the,

The outer or extreme end of; each sleeve is beveled or tapered, as"'at*16,arid fitting about these tapered ends-"are "collars-"17,2 eachpreferably re ea e of sheet metal pipes.

pressed into shape and having it's interriafl flange taperedcorrespondingly to the bevel? of th e sleeves." These collars areconnected together by bolts" 18, spaced symmetrically about the axis ofthe pi pes;

' It Will'bGSeGiI-Wlth the arrangement de scribed that been at thefactory who have been specially trained for this" Work prepare the pipesand the sleeves, properly assemble the respective; sleeves on the pipesand applyprotective coatings on the threads Where required,thusassu-ring that all-"dc tails are properly takencareof. Thepipes'}with they'as'sembled sleeves a nld eeuar's; there: on niayth'en beshipped to the fi el'd'ivhere the onlyork that the-"men Who actuallylay: the

line have to do is to-bringthe ends'of'the pipes together with a gasketinterposed therebetween, insert the bolt's through the collars and thentighten up the bolts to draw, together the abutting ends of the pipes;With the assurance that a tight, secure joint is produced Without anygreat degree ofcare or skill beingused on. the part of the work- Sincethe sleevesihaxre" already been men.

secured to the; thread ends of the pipes, theseh v threaded endscannotflbe" damaged during shipment or by unskllled workmen who are"liable, through carelessness orignorance, to

roughly handle the producti It is' understood that in order. a):

screwing of the, sleeves onto the pipes, v a

certain 'an'iountof looseness between the coin,-

plenientary threads must be provided fer Fpe'rinit Z :mea-tion ofmoisture along the joint.

and, unless.prevented,moisture will find its. way in between the sleevesand the pipes. l/Vith the arrangement of the present invcntion, itvwillbe noted that when the collars are'drawn towards each other upontighteningup of the bolts, these collars ride up the conical or bevelledends oi the sleeves and contract the same whereby the threads on thesleeves are pressed into intimate contact with the threaded portions ofthe pipes thus: producing a close joint or fit between the complementarythreads which increases the resistance ,to and actually preventsthe per-The sleeves being of fiber are sufliciently strong to withstand anyordinary strain to which they are subjected while at the same time theyare 'sufliciently resilient or yielding to,

be compressed or contracted against the pipes by the collars. I

"In the embodiment shown in Fig. 3, the

fiber .pipe an is connected by the use of my improved coupling to'ametal flange member b In-this instance, the endoit the fiber pipeaengages a pipe-like portion on the the sleeve12 is a collar orcompression ring 17 connected to the flange member by bolts 18. Whenthese bolts are tightened up, the

fiberpipe and flangememberwill be drawn together, and-the collar willride up onto the sleeve compressing the same againstthe fiber pipe as inthe preceding embodiment.

It is, of course, obvious that my invention is susceptible of variousmodificationsqa-nd and arrangedabout the tapered end of said 7 sleeveand adapted to compress the same changes which are within the spirit ofthe inventionlwithout departing from the scope of the following claims,it being understood that the present disclosureof my invention is bywayof illustration only and it is not to be taken as restrictive of myconception.

I claim as my invention:

1. A coupling for fiber pipe, and in combination, a fiber pipe having anexternally threaded end, an integral internally thread ed fiber sleevescrewed on said pipe and having a tapered end which is circumferentiallycont1nuous,a collar having its internal periphery taperedcorrespondingly to against the pipe to form a tight joint there- Abetween, and bolts for drawing said collar longitudinally upon thetapered end otsaid sleeve whereby the latter is compressed.

'2. A coupling for fiber pipe, and in combination', a fiber pipe havingan externally threaded end, and integral internally threaded fibersleeve screwed on said pipe and having its end spaced from the endthereof, said sleeve being circumferentially contlnuous, a second pipemember in telescopic relation to said sleeve, a collar about theouterend of said sleeve and adapted to compress the same into the threads ofthe pipe, and means between said collar and second pipe member formoving the collar longitudinally of said sleeve and drawing said fiberpipe and pipe member towards each 7 other. 7

3.,A coupling for fiberpipe, in com; bination, a fiber pipe having. anexternally threaded end, an integral internally threaded sleeve screwedon said pipe andhaving a portion projecting beyond the end of said,pipe,

said projecting end having a smooth internal periphery, the other end ofsaid sleeve being tapered, and vcircumferentially continuous andunbroken, a second pipe member closely and slidably received by saidprojecting end of said sleeve, a collar about the tapered end of saidsleeveand arrange'd'to compress the same into the threads of the pipe,and

bolts between said collarjand second pipe I member for drawing saidfiber pipe andsecond pipe member towards each other. 1

i. A coupling for fiber pipes, and in combination, a pair of fiber pipeshaving, their adjacent ends externally-threaded, an internally threadedsleeve screwed on .each pipe and eachhaving a tapered outer end, each ofsaid sleeves being an integral member with its tapered outer endcir'cumferentially continuous and unbroken, a collar arranged about thetapered end of eachsleeve, and,

bolts for drawing said collars towards each other ,to thereby compresssaid sleeves against said pipes and to draw said pipes towards oneanother. v r v 5. A coupling for fiber pipes, and in com-.

bination, apairof-fiber pipes having their adjacent ends, externallythreaded, an integral internally threaded sleevescrewed on I u u said adacentends, one of said sleevesprojecting beyond the end of thepipe onwhich it is screwed and said projecting end having a smooth internalperiphery of such diame, ter as to closely but slidingly receive theadjacent end of. the other pipe, 3 and the sleeve on the otherpipeterminating short' of the end thereof a distance slightly greater thanthe extent to which the other sleeve projects beyond its pipe wherebysaid pipes may be brought into. abutting relation, the extreme ends ofsaid sleeves being tapered and being circumferentially: continuous orunbroken, a collar surroundingfthe tapered end ofeach of said sleevesand,:ar1*anged to compress the same into the threads of the respectivepipes, I and means for drawing saidfcollars towards each other.

v HOWARD PARKER.

